mirror of
https://github.com/matrix-org/dendrite.git
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67 lines
2.1 KiB
Go
67 lines
2.1 KiB
Go
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// Copyright 2020 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package deltas
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import (
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"database/sql"
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"fmt"
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"github.com/matrix-org/dendrite/internal/sqlutil"
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"github.com/pressly/goose"
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)
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func LoadFromGoose() {
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goose.AddMigration(UpFixSequences, DownFixSequences)
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}
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func LoadFixSequences(m *sqlutil.Migrations) {
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m.AddMigration(UpFixSequences, DownFixSequences)
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}
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func UpFixSequences(tx *sql.Tx) error {
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_, err := tx.Exec(`
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-- We need to delete all of the existing receipts because the indexes
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-- will be wrong, and we'll get primary key violations if we try to
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-- reuse existing stream IDs from a different sequence.
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DELETE FROM syncapi_receipts;
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-- Use the new syncapi_receipts_id sequence.
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CREATE SEQUENCE IF NOT EXISTS syncapi_receipt_id;
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ALTER SEQUENCE IF EXISTS syncapi_receipt_id RESTART WITH 1;
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ALTER TABLE syncapi_receipts ALTER COLUMN id SET DEFAULT nextval('syncapi_receipt_id');
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`)
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if err != nil {
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return fmt.Errorf("failed to execute upgrade: %w", err)
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}
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return nil
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}
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func DownFixSequences(tx *sql.Tx) error {
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_, err := tx.Exec(`
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-- We need to delete all of the existing receipts because the indexes
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-- will be wrong, and we'll get primary key violations if we try to
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-- reuse existing stream IDs from a different sequence.
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DELETE FROM syncapi_receipts;
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-- Revert back to using the syncapi_stream_id sequence.
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DROP SEQUENCE IF EXISTS syncapi_receipt_id;
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ALTER TABLE syncapi_receipts ALTER COLUMN id SET DEFAULT nextval('syncapi_stream_id');
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`)
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if err != nil {
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return fmt.Errorf("failed to execute downgrade: %w", err)
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}
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return nil
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}
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